Using the Explore Tool in ArcGIS Pro to Identify Raster Values | Lightning GIS

Learn how to use the Explore tool in ArcGIS Pro to click on raster cells and read their values in the pop-up window. The example uses a flow accumulation raster and aerial imagery to find the flow accumulation threshold at the head of perennial flow in tributary valleys. That threshold is a key step in stream network delineation. In this video: • Set the Explore tool to return pop-ups only for the layer selected in the Contents pane • Read raster cell values in a docked pop-up • Toggle the raster off to check the imagery for water in the channel, and tell water apart from shadow • Record the flow accumulation value at the upstream limit of perennial flow • Why you should sample 10 or more tributaries across the watershed, and how to spot outliers such as spring-fed channels Chapters 0:00 Intro 0:31 Flow accumulation raster and symbology 1:31 Checking imagery for perennial vs. ephemeral flow 2:16 Setting up the Explore tool and reading cell values 3:22 Next tributary: water or shadow? 6:11 Recording the value at the head of perennial flow 7:02 Sampling across the whole watershed Lightning GIS is my YouTube channel for quick GIS tutorials and other helpful GIS information. Many of these videos were made for my university courses, and I share them here for anyone who can use them.